What will happen if you try to retrieve a key from TransferState on the client that was never set on the server, using get(key, defaultValue)?

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Angular - Server-Side Rendering

What will happen if you try to retrieve a key from TransferState on the client that was never set on the server, using get(key, defaultValue)?

AReturns undefined regardless of defaultValue

BThrows a runtime error

CReturns null always

DReturns the provided defaultValue

Step-by-Step Solution

Solution:

Step 1: Recall get method behavior
If the key is missing, get returns the defaultValue argument.
Step 2: Analyze options
Only Returns the provided defaultValue matches this behavior; no error or undefined is returned.
Final Answer:
Returns the provided defaultValue -> Option D
Quick Check:
Missing key returns defaultValue [OK]

Quick Trick: get returns defaultValue if key missing [OK]

Common Mistakes:

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